<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <script src="lib/react.js"></script>
    <script src="lib/react-dom.js"></script>
    <script src="lib/browser.js"></script>
</head>
<body>
    

    <div  id="root"></div>

    <script  type="text/babel">



        class App extends React.Component{

            constructor(props){
                super(props)

                this.state = {
                    msg:""
                }

                this.change = this.change.bind(this);

            }



            change(e){
                // console.log(e)

                let value = e.target.value;
                console.log(value)
                this.setState({
                    msg:value
                })
            }


            render(){
                return(<div>

                   <h1>{this.state.msg}</h1> 
                    <input  onChange={this.change} />
                </div>)
            }
        }
        
        //jsx     javascript + xml  
        ReactDOM.render(<App/>,document.getElementById("root"))

    </script>
</body>
</html>